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2MASS J04151954−0935066
Brown dwarf star in the constellation Eridanus / From Wikipedia, the free encyclopedia
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2MASS J04151954−0935066 (also abbreviated to 2MASS 0415−0935) is a brown dwarf of spectral class T8,[2][4] in the constellation Eridanus about 18.6 light-years from Earth. [2] This is a reference (standard) object for the definition of the T8 spectral class.[5]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Eridanus |
Right ascension | 04h 15m 19.54s |
Declination | −09° 35′ 06.6″ |
Characteristics | |
Spectral type | T8V |
Apparent magnitude (Y) | 16.438 ± 0.009[1] |
Apparent magnitude (J) | 15.343 ± 0.004[1] |
Apparent magnitude (H) | 15.666 ± 0.012[1] |
Apparent magnitude (Ks) | 15.658 ± 0.023[1] |
Astrometry | |
Proper motion (μ) | RA: 2214.3 ± 1.2[2] mas/yr Dec.: 535.9 ± 1.2[2] mas/yr |
Parallax (π) | 175.2 ± 1.7 mas[2] |
Distance | 18.6 ± 0.2 ly (5.71 ± 0.06 pc) |
Details[3] | |
Mass | 36±3 MJup |
Radius | 0.800±0.004 RJup |
Luminosity (bolometric) | 10−5.70+0.04 −0.01 L☉ |
Surface gravity (log g) | 5.14±0.03 cgs |
Temperature | 758+18 −3 K |
Metallicity | 0.28±0.02 dex |
Age | 4-6 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Location of 2MASS 0415−0935 in the constellation Eridanus |
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